Add WISMOlabs to "Who uses Liquid?" wiki section

[thegruffaloop]

👋 Hi! At WISMOlabs, we're inspired by Shopify's work, especially Liquid. We've integrated Liquid into our shipment tracking and post-purchase notifications for e-commerce, enabling personalized communication.

We've documented this integration and its benefits to retailers here.

Could you include "WISMOlabs - shipping tracking software" in the "Who uses Liquid?" section of the wiki? We believe our application of Liquid templates is unique amongst post-purchase experience platforms and shipping tracking solutions.